|Pos|Rider|Manufacturer|Time/Retired|Grid|Points|
|---|---|---|---|---|---|
|1|Roberto Rolfo|Honda|45:14.Ret3|8|25|
|2|Anthony West|Aprilia|+14.040|11|20|
|3|Fonsi Nieto|Aprilia|+33.511|5|16|
|4|Franco Battaini|Aprilia|+54.252|3|13|
|5|Alex Debón|Honda|+1:06.895|13|11|
|6|Naoki Matsudo|Yamaha|+1:06.943|9|10|
|7|Erwan Nigon|Aprilia|+1:13.421|12|9|
|8|Jaroslav Huleš|Yamaha|+1:22.119|10|8|
|9|Manuel Poggiali|Aprilia|+1:22.163|7|7|
|10|Johann Stigefelt|Aprilia|+1:25.303|22|6|
|11|Toni Elías|Aprilia|+1:41.591|1|5|
|12|Lukáš Pešek|Yamaha|+2:49.682|18|4|
|13|Dirk Heidolf|Aprilia|+1 Lap|17|3|
|14|Hugo Marchand|Aprilia|+1 Lap|19|2|
|15|Chaz Davies|Aprilia|+1 Lap|15|1|
|16|Héctor Faubel|Aprilia|+1 Lap|16||
|17|Henk vd Lagemaat|Honda|+2 Laps|25||
|18|Joan Olivé|Aprilia|+3 Laps|20||
|Ret|Randy de Puniet|Aprilia|Retirement|4||
|Ret|Christian Gemmel|Honda|Retirement|23||
|Ret|Eric Bataille|Honda|Retirement|14||
|Ret|Sebastián Porto|Honda|Retirement|2||
|Ret|Katja Poensgen|Honda|Retirement|24||
|Ret|Geoff Hardcastle|Yamaha|Retirement|26||
|Ret|Alex Baldolini|Aprilia|Retirement|21||
|Ret|Sylvain Guintoli|Aprilia|Retirement|6||

Question: what is the difference in points scored between erwan nigon and dirk heidolf?
Answer: 6